Metallic construction.



PATENTED NOV. 27, 1906.

A. J. MALMBBRG. METALLTO CONSTRUCTION.

APPLICATION FILED JULY 14. 1906.

3 SHEETS-SHEET 1- PATENTBD NOV.27, 1906.

A. J. MALMBERC. METALLIC CONSTRUCTION.

APPLICATION FILED JULY-14, 1906.

3 SHEETS-SHEET 2 1,6 iQ/a 5, Oil/.Fill

111g 55 ,zo yb Streuung PATENTED NOV. 27, 1906.

A. J. MALMBERG. METALLIC CONSTRUCTION.

APPLICATION FILED JULY 14. 1906.

3 SHEETS-SHEET 3.

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UNITED- STATES PATENT minion.A

Specicationof Letters Patent.

Patented Nov. 27, 1906.

Application and July 14, 190e. sum1 No. 926.180.

To a/ZZ who't vit may concern.-

Be it known that I, ARvID J MALMBERG, a subject of the ,King of Sweden,residing at Jamestown, in the county of .Chautauqua and State ofNewYork, have invented a new -and useful Im rovement in'.MetallicConstruction, of W ,'ch the following, taken in vconnection with theVaccompanying drawings, l

is a full, clear, and exact description.

The invention relates to sheet-metal construction, and particularly tometallic doors and casings; and the objects of the improvement4 are,first, to provide a door formed of 3 is a sectional view at line Uadmitting the overrails and overstiles and two pieces andf means Withinthe door for connectively retaining said pieces; second, to provide asim le and convenient means for dividing the oor into d'panels andforat-` tachingthe molding; thir to provide overstiles and overrails forextra strong iireproof construction, said overstiles and overrailsforming y a convenient means for lholding sheet-asbestos'xrmly in outer'andinner stiles an rails, which, with heavy sheet-asbestos between thetwo parts of the panel, make a complete covering of asbestos within thesheet metal for the entire door, and, -fourth,jto provide acasing forthe door which is held at the comer-joints in the saine manner as theretaining-joints of the door andmay have sheet-asbestos between theouter and-inner sheet-metal casings.

In the drawin s, Figure 1 is an elevation of a sim le form o door andcasing. Fig. 2 is an e ewise view of the door, showing the openingstherein for admittin the tool. Fig. .in Fig. 1 of an extra coveredreproof door. Fig. 4' is .a sectional view'at line- V V in Fig. 1 of anextra covered iireproof door. Fig. 5 is a sectional yiewof an extracovered casing at 'line W'W 1n Fig. 1. Fig. 6 shows sectional andedgewise views of a sin le-thickness door-corner,

showing the application of the clamping means to a mitered door-corner.Fig. 7 is a detail ofthe -method of attaching the'inner edges of `thetop and bottom overrails tothe panel; Fig. 8 is a plan view-of thesheet-V metal halfof the door, showing the slots for the cleats on thegjaiels for holding the inner g. Fi 9 is a-sectional thesin'gleethicknessdoor placed in proper position 'to forml a'hollowstile.v Fig. 10 1s a' sectional view at line Y Y in Fig. 8of'the'inner-thickness door, showingthe two halves lace between the withedges abutting and slots for admitting the ov'erstiles and overrails.sectional view at line X X in Fig. 8, showing the single-thickness doorwith the two halves in position and showing the elevation 'of the Fig.11 is a.

channel-clamping plate and the edge of the asbestos between the panels.Fig. 12 isa sectional view of the single-thickness door with 'a simplemodification of the molding around the anel. Fig. 13 is a sectional viewof the slngle-thickness door` at line V V in Fig.. 1, showing theanel-clam ing ieces for holding the two ha ves ofthe oor ml together.Fig. 14 is a planview ofthe pane e door, showing the use of cleats andpanelmolding for middle rail and middle stile or montant. Fig. 15 is asectional view at line T T in Fi 14. Fig. 15 is a sectional view of amod' ed construction.' Fig. 16 is a sectional view'at line T T in Fig.14 showing the modification of my construction in which the sltiles arenot struck up on the halves of the oor.

Similar numerals refer to corresponding parts in the several views.

The numeral 10 indicates the sheet-metal 'half of the door, the divisionbeing made Jaround the edge of thedoor. In a singlevthickness door theedges preferably lap the entire Width of the edge of the door, so that lthey may be fastened to one another by means of solder or rivetsfasdesired. For the eXtra-thickness fireproof door the division ispreferably made mldway of the edge, so that l the` halves can be placedwith edges abutting,

and thereby form a smooth edge for covering -with the asbestos andoverstiles. Each half l"is struck up from one piece of sheet metal, so

as to form -in `each piece one-half of the Stiles cross-rail 12, thebottom crossrail 13, an the central anel 14.

The sim lest form o my door is madeas follows:y T e ends of thecross-,rails 12 and 13.`

and the side of the stiles 11 adjacent to said ends are' turnedinwardly, so as to form a lilange 1 6, preferably on both parts, asshown Inturned flanges 16 are secured place by means of these channelclampingpieces within the'dplor. In order to insert screw-bolts .23,openings `24 are provided 1n vthe edges of the door, which openin s areIOO channelf clam ing-pieces 22 and screw- .bolts 23, thus hol 'ng thetwo sides firmly in IIO eted to panel 14. The edge ofthe molding ishooked underneath cleats 17, as shown. For the simpler form of molding19, as shown in Fig. 12, the inner edge is hooked Ibeneath the cleat 17and the outer edge is turned inwardly against' the stile and secured bya screw from inside the stile, which screw may be inserted before thehalves of the door are put in place. It is apparent, however, that W henit is desired to make a door with a num'' the cleats 17 if the cleats 17extended clear' up to the raised stile. Accordingly the cleats 17 areplaced so that there is a space between the ends of the cleats and" theraised ystile 1 1, as shown in dotted line in Fig. '14. The sheet metalis sufficiently stifl' to hold-the inner edge in place for this shortspace without the cleats 17.

Itis apparent thatthe turning-incr the ends of the cross-rails and theadjacent edges of thestiles forms a cut or slot in 'the sheet metal half10 and that this cut may be" pressed together, so that the samev'may'bemade flush in linishing overthe same, and thus give a smooth appearancet0 the outside of the door in the simple form of door, as

tween the flanges 16 isl vsimply widened to make the slot 15 for theinsertion of the 'overstiles 18 and overrails 10, and 13.

In order to give' extra strong tection, slots 15 are widened in halves10 between the ends 'of the cross-rai'ls and the stiles at each end ofthe door, the edge of the* stiles being turned Vin an'inward flange 16;Cleats 17 are riveted 'lengthwise of panel 14 just inside of stiles 1'1.

, halves 10 are placed with abutting edges and an outer cover 18 .forthe'stiles, which I have calledy an .overstile", is then slipped ontostile 1 1. Overstile 18 is formed with a molded inner edge 19 the lengthof panel 14- and;

has inturned edges which' hook underneath' cleats 17 as the overstile isslipped into place,

thereby firmly holding the inner edges of the overstile on eachv sideof-the 4door the full' length of panel 14. The edgesof Athe over'- stile18 opposite the-ends of cross-rails 12 and' 13 are turned inwardlythrough slots 151 Overrai'ls 2()A are provided for'cross-rails 12 and13.' The ends 21 of the overrails are turned inwardly through vslots15,' as shown in Fig. 4. The inturned flanges'21 and 16 of theoverst-ile and the `halfdoor 10 iare 'then'v 20, as shown in Figs.'8,

fireproof pro- The two sheet-metal securely held by means of channelclampingirons 22 on each side of the flanges and screwbolts 23. Theohannel-irons 22 preferably extend` 'the length of the slots 15, and theopenings 24 in the edges of the door are provided in the overstile thesame as in the simple form of door, as above described.

The `inner edges of overrails 20 may usually be held beneath the cleats17, as above der scribed, only the cleats do not extend entirely acrossthe distance -betweerrthe stiles. AIn some forms of doors, however, itisdesirable' to provide another holdin means for the inner edges 25 of theoverrai s, as in the case of so short a rail that 'the metal cannot besprung down beneath 'the cleats 17. For' such cases cross-bars 26 and2,7 are inserted within molding 25,' (see Fig..'7,) the-cross-bar 27having threaded `'openings therein.v rPhe small screws 28 are theninserted through the molding and bar 26 at one side and screwed intolengthwise bar I271 After setting the screw firmly to yplace the head ofscrew' 28 'is polished down=even with the surface of molding 251 so thatit does not show and makes a smooth finish-for the molding,I as well asa solidholdin'g means for the two inner edges of the overrail'20. Asheet of asbestos 29 is slippedr betweenthe'inner stile 1-1 andthe'outer stile 18 as the outer stile is slipped into place, therebycomy pletely hovering the outer and inner edges of the door; 'Likesheets are also providedbetween the outerand inner cross-rails and asheet is also inserted 'between the two parts ,of panel 14, therebyprovidingail-asbestos covering within the doorl over its entirev'surface, the overstiles and' rails holding' thesheet-asbestos firmlyin place, so that it cannot slip or work t'o one side and leave any partof sheet-metal door unprotected- IOC vIt is ofttimes' desirable to formdoors with'small panels by means of middl'ef'stiles 84 and rails 85 withcleats 1.7,A and for this vpurpose it is often more convenient-to formthe: two halves 10 flat and place them paral-' a lel, as shown at'36inthe modifiediform" shown in Fig. 16.` Itis apparent that thel middlerail and Stilescan beslip'pedonto this form with' perfect' ease and thatthefover-A stille 18 willbe'held in place by cleats' 17 lA smallrivet 37may be'inserted through theA outer edge of the overstile. "and innerhalf -1'0 in order-'to holdthefparts in place with great firmness, sothat they cannot give; Thisis not vusually foundV necessary," however,if the inner partl is pressed firmly against the overrail.

It is apparent that the slotsat each corner of the door `may be cut on amiter' andpractical method of construction for the sheet metaldoor-easing 30, the mitered'c'or= ners Sl'being turned inwardly and heldby clamping-pieces 22, as shown in Figs. 1 and 5. Also an overcasing 23may be provided andV sheet-asbestos 29 placed between the outer andinner' casing, thereby completely protecting the door and the casingwith tireproof material.

Channel-irons 22 usually fit sufficiently close at the sides to pressthe sheet metal firmly to place. It would not depart from my inventionto insert rivets 33, as shown in Fig. 13, through the lflanged edges ofthe clamping channel-irons and the adjacent sides, thereby holding allparts firmly in place. All such rivet-heads and joints are covered bythe enameled `finish which is used on such metallic construction. Thismethod of construction forms a' convenient manner offinishingsheet-bronze doors with the allmetal finish, the joints beingmade flush and the clamping means being entirely out of sight within thedoor.

I claim as new- '1. In hollow metallic construction for doors and thelike, oppositely-placed sheetmetal parts having oppositelyinturnedianges thereon, and clamping-piecesfor said oppositely-placed flangesbetween said parts to unite the same.

2. In metallic construction, a door comprising two halves, each struckup from a single sheet of metal to form semistiles and rails andconnecting-panels, inturiied lips on each of said halves, and clampingmeans for said lips between said halves to unite them in a door.

In metallic construction, a door comprising two struck-up sheet-metalhalves dividing around the edge of the door, inturned flanges on each ofsaid halves, and clampingpieccs for said [langes between said halves.

4. In metallic construction, a door comprising two sheet-metal halvesdividing around the edge of' the door', said halves struck yup to formstiles and rails, and connecting-panels, the ends of said rails and theY 6. In metallic construction, a door comprising two sheet-metal halvesdividing around the edge of the door, each of said halvesstruck up tolorm semistiles and rails, and sheet-metal overstiles and overrailsextending around said divided edges to bind them to, ;ether.

7 In metallic construction, a door comprising two sheet-metal halvesstruck up with stiles and rails, and slots betweenthe ends of said railsand the stiles, overstiles and overrails having projections into saidslots, and means for holding said projections Within the door.

8. In metallic construction, a door comprising two sheet-metal halvesstruck up with stiles and rails and slots between the stiles and theends of said rails, overstiles and cverrails having projections in thesaid slots, and. clamping-pieces within the door to hold saidprojections. n

9. In metallic construction, a door comprising two sheet-metal halvesstruck up with stiles and rails, and slots between said stiles and theends of said rails, overstiles and overrails projecting into said slots,sheet-asbestos between said halves and said outer and inner rails andStiles, and holding means within the door for said projection.

10. In metallic construction, a door comprising two 'sheet-metal halvesstruck up with stiles and rails having slots between said Stiles in theends of said rails overstiles and overrails with flanged inserts in saidslots, and channel clamping-pieces and screwbolts-within said door tohold said iianged inserts.

11. In metallic construction, a door, cleats on said door, and moldingslidably engaging beneath said cleats to form a panel.

12. In metallic construction., a door, spaced cleats on said door, andmolding having inturned edges to h'old under said cleats and formpanels. l

13. In metallic construction, a door, cleats on said door, and stilesand rails having lipped edges to hold under said cleats and form panels.

14. In metallic construction, a door, spaced cleats on said door, stilesand rails having lipped edges to hook under said cleats, and middlerails and montants having double-lipped edges to hold under said cleatsand form a plurality of panels.

sitcly-placed plates to form the sides o the door, strips attached tosaid'plates, having raisededges and stile and rail moldings havinglipped edges to hook under said strips and form panels.

16. In metallic construction, a door comprising two sheet-metal halvesstruck up with stiles and rails and panels, cleats on said panelsadjacent to said stiles, said halves having slots between said stilesand the ends of said rails, overstiles having inturned edges engagingsaid cleats and projections in said slot, overrails having projectionsin said l slots, and channel clampingieces and screwbolts within saidhalves to tions.

17. In metallic construction, a door comprising two sheet-metal halvesstruck u with stiles and rails, overstiles andoverrai s old said projec-IOO I l O 1.5.` In metallic construction, a door, o poformed withinturned lips, a. bar Within said lips on each side of said door, andscrews engaging said bars to clamp said inner edges.

18. In metallic construction, a. jamb substantially U-shaped lhavinginwardly-projecting anges at their. upper ends, a. lintel substantiallyU-shaped having nwardlyprojecting ienges at each end, channel-iron-clamping-pieces Within said lintel and j ainbs each side Of said anges,and screw-bolts to hold said channel-irons.

19. In metallic construction, avjamb substantially U-sl1a.ped7 a lintelsubstantially U- tial y U-shaped having inwardly-projecting I5 flangesat'the connecting-joints,v and sheet l sbestos between said outer andinner lintels end jambs, and clamping-pieces to hold'said 'flangedinserts.-

Intestnnony whereof I have signed my zo name to this specicetion in thepresence of two subscribing Witnesses. l

1 ARVID J MALMBERG.

VVltnesses HJALMAR MALMBERG, A.- W. KETTLE.

